Sole roughing machine



vJuly 22, 1947. A. Isl-:Rm

' soLE. ROUGHING MACHINE Filed om.A 1e, 1946 :s sheets-sheet 1A July 22,1947. A. FERRI K sc mi"I ROUGHING MACHINE s sheets-sheet '2 Filed 001;.`16, 1946 INVENTOR.

July 22, 1 947. A. PRRI SOLE ROUGHING 'MACHINE sheets-sheet sI FiledOct, 16, 1946 INVENTOR.

Patented July 22, 1947 SOLE ROUGHIN G MACHINE Angelo Perri,

Shoe Machinery Cor poration of Massach Groveland, Mass., assignor toAllied p., Haverhill, Mass., a corusetts Application October 16, 1946,Serial No. 703,535

9 Claims.

This invention relates to improvements in roughing machines and moreparticularly machines for roughing the marginal region of a shoe soleelement preparatory to cementing the element in place in a shoestructure.

It is among the objects of the invention to provide a roughing machinewherein the work, such as a shoe sole, is automatically fed and guidedto advance a marginal region of the work progressively to roughingposition, all around the edge of the work, and wherein the roughing isaccomplished by the action of roughing elements travelling generally inthe plane of the surface which is being roughed.

Another object is to provide a roughing machine for roughing a marginalregion of a work element, all around the element, and having provisionfor leaving an un-roughed narrow band at the extreme edge of the workelement.

Yet another object is to provide a sole element roughing machine havinga pair of feed wheels rotating in opposite directions on angularlyrelated axes with a pair of guides for the edges of the sole elementagainst both of which the sole element is urged edgewise by the feedingcoaction of the angularly related wheels and against one of which thesole `element is additionally urged edgewise by a roughing memberrotatably engaging the marginal region of the sole element as theelement is advanced between the feed wheels.

A further object is to provide a sole element roughing machine having apair of work feeding wheels rotating in opposite directions on angularlyrelated driving shafts of which one is adjustably biased toward theother for engaging the margin of a sole element between them, with theangularly related wheels coacting for advancing the work and with onewheel urging the sole element laterally simultaneously with its advance.

Still another object is to provide a sole element roughing machinehaving means for roughing a marginal region of a sole element, andincluding means for adjustably spacing the roughed area inward from theedge of the-sole element.

It is, moreover, my purpose and object generally to improve thestructure and eifectiveness of roughing machines and more especiallyInachines for roughing the marginal regions of shoe sole elements.

In the accompanying drawings:

Fig. 1` is a front elevation of a roughing machine embodying features ofmy invention;

Fig. 2 is a top plan view of the machine of Fig. 1;

Fig. 3 is a cross-sectional View approximately on line 3-3 of Fig. 2

Fig. 4 is a cross-sectional detail, on a larger scale, of the adjustableroller which engages under the work;

Fig. 5 is a cross-sectional view approximately on line 5 5 of Fig. 1, ona larger scale;

Fig. 6 is an enlarged cross-sectional detail of one of the adjustableguide rollers which engage the edge of the work;

Fig. 7 is a perspective view, somewhat diagrammatic, of one of thepivoted roller-carrying arms which engage the upper surface of the work;

Fig. 8 is a bottom plan view of a shoe sole element having its marginalregion roughed, and showing a narrow band of un-roughed surface at theeXtreme edge of the element;

Fig. 9 is a fragmentary' cross-sectional View on line 9-9 of Fig. 8; and

Fig. 10 is a detail cross-sectional View through the work at theroughing position, and showing a sole element having a skived uppermarginal surface.

Referring to the drawings, any suitable support I0 may serve formounting the hollow casing I 2 from which the relatively large diameterconduit I4 leads to a suitable suction means (not shown) which creates apartial vacuum in casing I2 for removing dustand waste matter from theregion where a marginal portion of a sole element is roughed by meansand in a manner which presently will be described.

Casing I2 includes the upper rectangular relatively shallow portion I6within which the shaft I8 extends, with a feed wheel 20 on the forwardend of the shaft for engaging the under margin of a sole element S. Theportion I6 of the casing has a top opening which is closed by aremovable cover plate 22, and this plate 22 constitutes the work supportat the roughing region and has a relatively large slot 24 through whichfeed wheel 20 operates to engage the work.

Toward the rear of the machine, the shaft I8 has universal connection at26 to a short shaft 28 which extends into and is journaled in the wallsof a gear housing 30 suitably mounted at the rear end of the casing.Short shaft 28, interiorly of housing 3l),J has iixed thereon a wormgear 32 meshing with a Worm 34 oma shaft 36 which extends out of housing3l] and which has a pulley 38 on its outer end. An electric motor 40 ispivotally supported on casing I2 at 42 and is adjustable on pivot 42,-bymeans of the adjusting screw 44. The :motor shaft 46 has a pulley 48 3thereon for driving worm 34 through the medium of belt 50.

The extreme forward end of shaft I8 is mounted in the adjustableeccentric bearing 52, as best seen in Fig. 3, the bearing having anannular groove 54 within which the set screw -56 engages for securingthe bearing against axial displacement and by which the bearing may befixed in any adjusted setting, the bearing having a knurled head 53 bywhich it may be manually rotated when the set screw 56 is loosened. Withthis construction, the forward end of shaft I8 may be raised or loweredfor precision setting of the feed wheel 20, the universal connection at26 permitting needed adjustmentsv at the forwardl end of shaft I8without interfering with the drive of the shaft I8.

A feed wheel 68 is positioned for coaction with feed wheel 20 in feedinga sole element S engaged between them. Wheel ,60 is fixed on the forwardend of a shaft 62V whose-'rear end has a universal connection at 64 to ashort shaft 66 which is similar to short shaft 28 and which has the wormgear 68 xed thereon interiorly of housing 30 and meshing with the worm34, whereby shaft 62 is rotated in direction opposite to the directionof rotation of shaft I8.

It is a feature of the invention that the shaft `62 has its forwardportion extending through a bearing 1|) at the forward end of an arm 12which is pivotally mounted at 14 on ears 16 which are rigid on the gearhousing 30. Arm 12, at its rear end,-has an ear 18 rigidly upstandingthereon in which the two-diameter pin 80 is rotatably mounted, with thelarger diameter portion 80 at one side of the ear and Withthe smallerdiameter portion 80l extending through and projecting at the other sideof the ear.

A rigid upstanding ear 82 on gear housing 30 is in general alignmentwith ear '18 on arm 12, and has rotatably mounted therein thetwo-diameter pin 84 with the larger-,diameter portion 84 at one side ofthe ear and with the smaller diameter portion 84 extending through andprojecting at the otherside of the ear. Two screws 86, 88 each extendsthroughboth of the pins 00, 82 at a different side of the ears 18, 82.Screw 86 extends slidably through pin 80 and is threadedly engagedthrough pin 84, while screw 88 is threadedly engaged through pin 80 andslidably engaged through pin 84. A nut 90 is adjustable on screw 86,betweenthe pins; and a spring 92 engages between the nut Yand pin 80,constantly biasing the arm 12 clockwise about its pivot 84, as viewed inFigs. 1 and 3, and the limit of clockwise movement of the arm isadjustably determined by the enlarged portion 89 of screw 08, atits headend, engaging the pin 84. Hence, mere rotation of screw 88 effectsadjustment of arm Y'I2 to bring feed wheel 60 closer to or further fromthe coacting feed wheel 20. However, the arm` 12 is resilientlyyieldable, against the bias of spring 92, in direction generally awayfrom the wheel 20.

As clearly shown in Figs. 1 and 3, the shaft 82 may have considerableinclination relative to the generally horizontal 'shaft I8, and theperiphery of wheel .60 is tapered so that its engagement with a soleelement maybe a generally horizontal engagement notwithstanding theinclination of shaft 82. Wheel 2-0, on the other hand, preferably willhave a generally cylindrical periphery with oblique teeth therein forurging the work lateral-ly simultaneously with the advance of the workbetween thc wheels, with the lateral thrust augmented to a substantialdegree by the fact that the two work-engaging wheels rotate in oppositedirections on angularly related axes.

A sole element S inserted between wheels 20, 60 is engaged at a marginalregion of the element, and the course of the element is determined bythe pair of guide rolls 94, 96 which engage the edge of the element asthe latter advances between the wheels. Roll 94 may be arrangedgenerally opposite the perpheries of the feed wheels so that the mainforward advance of the work thrusts the edge -of the work against roll94.

The other roll 96 may be positioned generally laterally beside theregion of bite of the Wheels, and the previously described lateralthrust on the workv maintains the edge of the work against roll 96. As aresult, after a sole element has been initially engaged between wheels20, 60, it feeds automatically with the Wheels engaging progressivelyall around the margin of the sole element.

According to the invention, a sole element feeding between the wheels20, 60 is roughed at the under side progressively all around the marginof the upper by a toothed roughing member whose teeth rotate in a planegenerally parallel with the work surface which is being roughed.Referring more particularly to Figs. 3 and 5, a roughing member isindicated generally at 98, secured on the upper end of a vertical shaft|00 which is mounted in a yoke |02 and which has a pulley |04 thereon,within the yoke, belt driven from an electric motor |06. Roughing member98, as shown, has generally cylindrical form, with its annular top edgeprovided with the cutting teeth or serrations |08. Member 98 isremovably mounted on shaft |00 by means of the screw I'I0 projectingfrom the shaft and engaging in the bayonet slot |I2 in member 98. Yoke|02 has bosses |I4, IIB projecting from the respective arms of the yokewhich provide bearings for shaft |00. The upper boss I4 projectsslidably through the bottom wall of the forward portion of the casing,and the lower boss I6 is slidably supported in a bracket 8 which issecured to this bottom wall of casing,.as best seen in Fig. 5. A groove|20 in the bracket loosely receives a peripheral portion of the head |.I2 of an adjusting screw |24 which is threaded into yoke |02, with a pairof pins |26 projecting from the bracket on opposite sides of the shankof the screw for steadying the latter. Rotationof the screw, with itshead |22 restrained against vertical travel, effects adjustment of theyoke and of roughing member 88 toward orfrom the work to increase ordecrease the roughing effect. By providing a split bearing for vtheboss||6 of yoke |02, the yoke may be clamped in .any adjusted position bytightening the split-bearingby means of screw 'I I9.

Theroughingmem-ber 98 operates in the slot 24 inthe cover-plate worksupport 22. Its position inward .relative to guide roll 96 and outwardrelative-to guide roll 94. as best-seen in Fig. 2, and the `direction ofits rotation, as indicated by the arrow in Fig. 2,combine tov create arelatively strong tendencyto rotate the work about the axis of theroughing member 98, and this tendency urgesthe edge of the work invdirection toward guide roll-96. vThe incidental tendency to swing thework away from guide roll 94 is over-borne by the action of the feedwheels 20, 60 whose main feeding effectis toward the guide roll 94. Thecumulative effect of the feed wheels and roughing member on the work isto maintain the edge of the work strongly against guide roll 96 andagainst guide lroll -94,1but .With-the roughing :memberTactingwithirolli94 in guiding the leadingportion of the work.

Inasmuch-:as the froughing'member r98, working on `the under side ofthework, tends to `liit .the workaway from support 2'2, Il provide oneor'more spring-biased arms |28, eachwith aroller |30 at its end, forvriding `on 'the upper surface f the work and pressing the work` againstsupport 22 in opposition I:to the lifting `tendency'of member 98.`Asilierein shown, 'two such arms |28'arepivotally mounted on a bracketI3-2, each `with Va spring |34 larijustably fbiasing its lrollercarrying vend into'engagement'with the work. Fig.'7 :shows one of 'thearms |28 'witha laterally .projecting lug `1| 36 thereonthrough whichascrew |381loosely extends for `screwing into the bracket |32. The spring|34 engages between the head of theiscre'w and the 4lug |36., constantlybiasing the arm 4and roller |3l| clockwise in Fig. 7. `The `biasingforce may be adjusted bymeans .of screw |38. lAnother screw |40 isthreaded through lug |36 with its lower end butte'd against bracket |32,l'for adjustably Vlimiting the clockwise movement of arm |28, with alock nut |42 for locking screw |4Uiin anyparticular adjusted setting.With this construction, the'rollers "|30 effectively press the workagainst Asupport 22 K'when the upper and lower surfaces of the :engagedwork are parallel "andV also when `the upper surface is skived, vassuggested in Fig. 10.

Preferably, also, `I;p'rovide a roller |44 (Figs. 3 and 4) for engagingthe under side of vthe work adjacent tothe roughingmember 98, thereby toavoid any possibility of an edge of the work getting caught in the slot24 when being introduced between 'the `ieed wheels. As `best seen finFig. 4, this roller |44 is conveniently carried at the end of anarm1`45which is pivoted at |48 on the under side of cover yplate 22, with anadjustable screw |58 threaded through the arm and resting by gravity ona wall o'f the casing. The roller engages the work through tthe slot`24, Vand may be adjusted as to position by 4meansofscrew |50.

It lis an important 'feature of the invention that a marginalregion ofasole elementma'ylbe quickly and effectively roughed all around thes`ol'e element without roughing'the extreme edge `'of the element whichmay be exposed in a shoe. In cemented shoes, the sole elementsfrequently are formed toaccurate shape prior 'to combining with anupper, so that the sole elements require no subsequent trimming orgrinding. In such cases, it becomes importan-t that the edges which areto be exposed in ya shoe shall be smooth and iinished. My presentroughing machine is adapted to eliectively rough a desired marginalregion of a sole element while leaving a desirable bead or thin band ofun-roughed surface at the extreme edge of the element, as represented inFigs. 8 and 9, where the roughed band is indicated at |52 and a narrowun-roughed bead or band is indicated at |54. With my rotary roughingmember 98 acting on the work in a generally horizontal plane, the guideroll 94 may be set close to the circle of roughing action of member 98for determining a width of edge surface which will not be roughed. Inthis connection, it should be noted that the roller 94 is mounted forminute adjustment relative to member 88. Fig, 6 shows roller 94 mountedon an eccentric bearing |56 which is mounted on cover plate 22 by meansof a screw |58. By loosening screw |58 the eccentric |5|1 may by rotatedto bring the periphery of the roller toward or from the peripheralcircle of (i roughing Vmember' 98, thereby `'to vary-the widthof'theun-roughed beadorband |54. Tightening of screw F58 secures ltheroller in any Aselected setting. The other roller 98 may 'be similarlyeccentrically mounted for adjustment, if desired.

I `claim las -my invention:

`1. 1A roughing'machine comprising awork support having Ean 'openingtherethrough at the roughing position, 'a `rotary `roughing `membermounted `on 'an 'axis Lgenerally perpendicular to the work 'support andoperating in said opening in vthe Workrsupport for `engaging androughing the under surface of work restingon the support, apair -offco'actin'g lfeed wheels mounted on angularly vrelated axes-landAarranged for engaging fa marginal -reg-ion of -the Work, means drivingthe feed Wheelsin Lopposite directions for advancing the 'work past saidroughing member, and a pair of'guides foren'gaging-e'dge portions of theWork and arrangedforfguidingthe-course of the work, said roughing7member rotating in direction 'to constantly urge-'the `work edgewiseagainst at least one of said guides,

-2. 'Afro'ughing machine comprising a Work support `having Ian 'openingtherethrough at the roughing position, la rotary roughing member mounted`on an taxis generally `perpendicular to the work support and operating4in said opening in the work support -for engaging and roughing theunder surface of work resting `on `the support, a pair of coacting 'feedwheels mountedon angullarly related axes and arranged for engaging amarginal region of the work, means driving the feed 4wlfie'els xinropposite vdirections for advancing the work Apastsai'd roughing member,and a pair of guides for engaging edge portions of vthe work and`arranged for guiding `the course of the work, said -rough'ing memberrotating in Adirection to constantly urge the work edgewise against atleast `one of said guides, and one of said `feed Wheels 'beingadjustably biased in direction generally toward A:the other feed wheel.

3. `A roug'hingrnachine comprising a work support h'a'ving `"openingtherethrough at `the mug-hing position, a rotary roughing member mounted'on an airis generally perpendicular to the work vsupport and operatingin said opening in the work support for engaging and roughing theunder'surface Vof work resting cn the support, a pair of coacting'ieedwheels mounted on angularly related axes -and arranged for kengaging amarginal region of the work, means driving the feed wneels in 'oppositedirections for advancing the workpast said roughing member, a pair ofguides :arranged in'spaced relation outward from said roughing memberfor engaging edge Aportions of the work and guiding the course of thework as it is advanced by the feed wheels, and means for setting one ofsaid guides toward and from said roughing member for selectivelypredetermilning a width of surface adjacent to the edge of the workinward of which the roughing by said roughing member will occur, therebyto leave said predetermined width free of any roughing.

4. A roughing machine comprising a Work support having an openingtherethrough at the roughing position, a rotary roughing member mountedon an axis generally perpendicular to the work support and operating insaid opening in the work support for engaging and roughing the undersurface of work resting on the support, means for adjusting saidroughing member toward and from the Work to Vary its roughing effect onthe Work, means pressing the work against said roughing member, a pairof driven feed wheels rotating in opposite directions on angularlyrelated axes and engaging a marginal region of the work outward of saidroughing member, a pair of guides outward of said feed wheels forenga-ging edge portions of the work thereby to guide the course of thework advancing between the feed wheels, said roughing member rotating indirection to constantly urge the work edgewise against one of saidguides, and means for adjusting the other guide toward and from theroughing member for selectively locating the roughing any of variousdistances inward from the edge of the work.

5. In a roughing machine having a work support and a pair of coactingfeed wheels driven in opposite directions for advancing a work elementbetween the wheels, the combination therewith of a roughing memberrotating on an axis generally perpendicular to the work support, therebeing an opening in the work support within which said roughing memberoperates with an end portion thereof rotarily engaging an under regionof the work in a plane generally parallel with the plane of the worksupport whereby said roughing member tends to rotate the work about theaxis of the roughing member, an edge guide arranged to restrain saidrotational tendency of the work, and another edge guide generally in thepath of the work for swinging the work about the first guide as an axis,thereby to guide the course of the work advancing between said wheels.

6. In a roughing machine having a work support and a pair of coactingfeed wheels driven in opposite directions for advancing a work elementbetween the wheels, the combination wherein one of said wheels ismounted on an axis angularly related to the axis of the other wheel,whereby a work element feeding between the wheels is urged laterallysimultaneously with its advance between the wheels, a guide roller in.the path of advance of the work for engaging an edge portion of thework, said lateral urge maintaining said edge against the roller, aroughing member rotating on an axis perpendicular to the work supportwith an end portion thereof rotarily engaging the work and tending toswing the work away from said guide roller, and a second guide rolleropposing the latter said swinging tendency of the work and constitutinga fulcrum of swinging of the work as the first said guide roller directsthe course of the work advancing between the feed wheels.

7. In a roughing machine having a work support with an openingtherethrough, the combination therewith of a roughing member rotating onan axis perpendicular to the support with an end projecting through saidopening into contact with a work element on the support, said contactingend of said member being adapted to rough the engaged surface portion ofthe work, a driven feed wheel rotating on an axis generally parallelwith the work support and engaging a surface of the work through saidopening, a second driven feed. wheel rotating in direction opposite tothe direction of rotation of the first said feed wheel and on an axisinclined with respect to the axis of the rst wheel, means for varyingthe inclination of the axis of the second wheel, and a pair of guidesfor engaging edge portions of the work thereby to direct the course ofthe work element advancing between the feed wheels, said second wheelurging the work laterally toward at least one of said guidessimultaneously with the main advance of the work.

8. In a roughing machine, a .work support having an opening therethroughat the roughing position, a roughing member rotating on an axisperpendicular to the support with an end portion projecting through saidopening for contacting and roughing a work element on the support, apair of oppositely driven shafts, each having a universal driveconnection whereby an end of each shaft may be adjusted about itsuniversal connection, a feed wheel on the adjustable end of each shaftfor coaction in feeding a work element between them, means resilientlybiasing one said wheel toward the other, the wheel-supporting end of oneof said shafts being inclined relative to the wheel supporting end ofthe other shaft whereby the wheel on said inclined shaft urges the worklaterally simultaneously with its advance between the wheels, and guidemeans engaging edge portions of the work element, at least one of whichis positioned to have the work urged thereagainst by said wheel tendingto urge the work laterally.

9. In a roughing machine, a work support having an opening therethroughat the roughing position, a roughing member rotating on an axisperpendicular to the support with an end portion projecting through saidopening for contacting and roughing a work element on the support, apair of oppositely driven shafts, each having a universal driveconnection whereby an end of each shaft may be adjusted about itsuniversal connection, a feed wheel on the adjustable end of said shaftsfor coaction in feeding a work element between them, and means forindependent adjustment of each wheel toward and from the other, saidadjustment for one wheel including biasing means constantly pressingthat wheel in direction toward the other wheel.

ANGELO PERRI.

